Respuesta:
D) 17
Explicación paso a paso:
X es la edad actual
[tex]x - 7 = \frac{x + 7}{3} \\ 3(x - 7) = x + 7 \\ 3x - 21 = x + 7 \\ 3x - x = 7 + 21 = 28 \\ 2x = 28 \\ x = \frac{28}{2} = 14[/tex]
[tex]x + 3 = 14 + 3 = 17[/tex]
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Verified answer
Respuesta:
D) 17
Explicación paso a paso:
X es la edad actual
[tex]x - 7 = \frac{x + 7}{3} \\ 3(x - 7) = x + 7 \\ 3x - 21 = x + 7 \\ 3x - x = 7 + 21 = 28 \\ 2x = 28 \\ x = \frac{28}{2} = 14[/tex]
[tex]x + 3 = 14 + 3 = 17[/tex]